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ovl: add helper to force data copy-up 

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
hifive-unleashed-5.1
Vivek Goyal 2018-05-11 11:49:33 -04:00 committed by Miklos Szeredi
parent 0a2d0d3f2f
commit d1e6f6a94d
2 changed files with 6 additions and 0 deletions
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5
fs/overlayfs/copy_up.c
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@ -867,6 +867,11 @@ int ovl_open_maybe_copy_up(struct dentry *dentry, unsigned int file_flags)
return err;
}
int ovl_copy_up_with_data(struct dentry *dentry)
{
return ovl_copy_up_flags(dentry, O_WRONLY);
}
int ovl_copy_up(struct dentry *dentry)
{
return ovl_copy_up_flags(dentry, 0);

1
fs/overlayfs/overlayfs.h
View File

@ -407,6 +407,7 @@ extern const struct file_operations ovl_file_operations;
/* copy_up.c */
int ovl_copy_up(struct dentry *dentry);
int ovl_copy_up_with_data(struct dentry *dentry);
int ovl_copy_up_flags(struct dentry *dentry, int flags);
int ovl_open_maybe_copy_up(struct dentry *dentry, unsigned int file_flags);
int ovl_copy_xattr(struct dentry *old, struct dentry *new);